<template>
  <div class="ratingselect">
    <div class="rating-type border-1px">
      <span @click="select(2,$event)" class="block positive" :class="{'active':selectType===2}">{{desc.all}}
        <span class="count">{{ratings.length}}</span>
      </span>
      <span @click="select(0,$event)" class="block positive" :class="{'active':selectType===0}">{{desc.positive}}
       <span class="count">{{positive.length}}</span>
      </span>
      <span @click="select(1,$event)" class="block negative" :class="{'active':selectType===1}">{{desc.negative}}
       <span class="count">{{negative.length}}</span>
      </span>
    </div>
    <div class="switch" :class="{'on':onlyContent}" @click="toggleContent">
      <span class="icon-check_circle"></span>
      <span class="text">只看内容的评价</span>
    </div>
  </div>
</template>

<script>
  const POSITIVE=0;
  const NEGATIVE=1;
  const ALL=2;
  export default {
    //接受的参数
    props:{
      ratings:{
        type:Array,
        default(){
          return []
        }
      },
      //默认选中所有
      selectType:{
        type:Number,
        default(){
          return ALL;
        }
      },
      //只显示内容
      onlyContent:{
        type:Boolean,
        default(){
          return false
        }
      },
      //描述
      desc:{
        type:Object,
        default(){
          return {
            all:"全部",
            positive:"满意",
            negative:"不满意"
          }
        }
      }
    },
    //计算属性
    computed:{
      //推荐的  filter  过滤数组
      positive(){
        return this.ratings.filter((rating)=>{
          return rating.rateType===POSITIVE;
        })
      },
      //吐槽的
      negative(){
        return this.ratings.filter((rating)=>{
          return rating.rateType===NEGATIVE;
        })
      }
    },
    methods:{
    // 点击全部ALL
      select(type,event){
        //避免pc点击多次
        if(!event._constructed){
          return;
        }
        //不可以在子组件内，随意改变父组件传过来的值，通过 $emit 将子组件需要改变的值，发送给父组件，然后父组件在通过 props 传给 子组件，然后 view 就会发生相应的改变
				//this.selectType = type;
        //$emit替换了dispatch
        this.$emit('select',type);
      },
    //  点击（只看内容的评价）
      toggleContent(event){
        //避免pc点击多次
        if(!event._constructed){
          return;
        }
        this.$emit("onlyContent",this.onlyContent)
      }
    }
  }
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixin.styl"
  .ratingselect
    .rating-type
      padding: 18px 0
      margin: 0 18px
      border-1px(rgba(7, 17, 27, 0.1))
      font-size: 0
      .block
        display: inline-block
        padding: 8px 12px
        margin-right: 8px
        line-height: 16px
        border-radius: 1px
        font-size: 12px
        color: rgb(77, 85, 93)
        &.active
          color: #fff
        .count
          margin-left: 2px
          font-size: 8px
        &.positive
          background: rgba(0, 160, 220, 0.2)
          &.active
            background: rgb(0, 160, 220)
        &.negative
          background: rgba(77, 85, 93, 0.2)
          &.active
            background: rgb(77, 85, 93)
    .switch
      padding: 12px 18px
      line-height: 24px
      border-bottom: 1px solid rgba(7, 17, 27, 0.1)
      color: rgb(147, 153, 159)
      font-size: 0
      &.on
        .icon-check_circle
          color: #00c850
      .icon-check_circle
        display: inline-block
        vertical-align: top
        margin-right: 4px
        font-size: 24px
      .text
        display: inline-block
        vertical-align: top
        font-size: 12px
</style>
